Geser is a classic sliding tile puzzle that challenges a player to slide usually flat pieces
along certain routes to establish a certain end-configuration. It is also called fifteen puzzle.

It allows you to test your spatial manipulating abilities as you work to join the pieces that are made to fit together.
Finding moves and the paths opened up by each move within the two-dimensional confines of the board
are important parts of solving sliding block puzzles.

Fun games to play while you are waiting bus, train, or friend, and exercise your brain as well.